Canis lupus is in the order Carnivora and the class Mammala.
Canis lupus is an endangered species under the Endangered Species Act.

TAXONOMY : There are 32
subspecies of wolf worldwide; 24 of these occur in North America. They are
differentiated by size, weight, color, cranial measurements, and geographic
location However, these characteristics vary within each subspecies. Also
their ranges can overlap and interbreeding occurs. All 24 North American
subspecies arelisted below. Those thought to be extinct are marked with an
asterisk.

OTHER STATUS : The wolf is
threatened in Minnesota Alaskan and Canadian wolf populations are considered
viable . The wolf is rare in Michigan's Upper Peninsula . In Montana the
wolf is recolonizing areas around Glacier National Park and south towards
Missoula. It has also been seen denning in isolated areas of northern
Washington.